http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1120713-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_73ee0bacab5a7576a6a3244747f6ea99 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G77-70 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G77-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G77-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G77-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G77-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G77-20 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L83-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L83-04 |
| filingDate | 1965-04-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_669f155d9ffd3887be16769480e2916f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ef7d0caeb67313ba57fd32509b503ae0 |
| publicationDate | 1968-07-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1120713-A |
| titleOfInvention | New and useful organosilicon compositions |
| abstract | A composition, curable to a rubber when solvent is removed, is made by reacting together in an organic solvent 100 pts. (by wt.) of a diorganopolysiloxane having at least 2 Si-bonded -OH groups per molecule, an amount of up to 2 pts. of a linear polysiloxane of viscosity not greater than 1000 cs. at 25 DEG C. and consisting of RHSiO units with or without terminal R3SiO0.5 units, or up to a corresponding RHSiO wt. content if the linear siloxane contains R2SiO units, where R is a monovalent hydrocarbon or substituted hydrocarbon radical, 0.45 to 3.0 pts. of tin in the form of a stannous carboxylate and 0.1 to 0.5 pt. of water. The organic groups in the diorganopolysiloxane may be alkyl, alkenyl or aryl and may contain cyano, chloro or fluoro-substituents. Solvents specified are white spirit, toluene, benzene, xylene, carbon tetrachloride and perchlorethylene. The reaction is usually effected at 60 DEG to 80 DEG C. In a typical Example (1) a toluene solution of stannous octoate was added, with stirring, to a toluene solution of a hydroxyterminated dimethyl polysiloxane maintained at 70-75 DEG C.; water was then added, followed by the methylhydrogen siloxane in toluene, which was added in small portions over 5 mins., and the mixture was maintained at 70-75 DEG C. for a further 2 hours to yield the desired product. Uses.-For forming elastomeric films on paper, aluminium and glass.ALSO:Paper is coated, e.g. as by knife coating, with a liquid composition obtained by reacting together in an organic solvent 100 pts. (by wt.) of a diorganopolysiloxane containing at least 2 si-bonded -OH groups per molecule, not more than 2 pts. of a linear siloxane comprising RHSiO units, where R is a monovalent hydrocarbon radical with or without substituents, 0.45 to 3.0 pts. of Sn as a stannous carboxylate, and 0.1 to 0.5 pt. of water (see Div. C3). Upon removing the solvent the composition will cure to an elastomer without the use of high temperatures. Examples describe the above coating of (1, 4, 5) glazed paper, and (2, 3) yellow kraft paper and vegetable parchment. Elastomeric films are also formed (8, 11) on Al foil and (10) a glass surface. The above treated paper is provided with a non-migratory release (or antistick) finish with good resistance to abrasion, and is of value as a backing for adhesive tapes. |
| priorityDate | 1965-04-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 43.